:root {
  --bg: #f4f7f9;
  --surface: #ffffff;
  --surface-soft: #eaf0f4;
  --text: #15212b;
  --muted: #5f6d77;
  --line: #d8e1e7;
  --navy: #0d1722;
  --navy-2: #15283a;
  --blue: #08669f;
  --cyan: #53b8df;
  --gold: #d79b35;
  --gold-dark: #a66b1f;
  --max: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

img { display: block; max-width: 100%; }
a { color: inherit; }

.container {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(13, 23, 34, 0.97);
  border-bottom: 1px solid rgba(255,255,255,0.09);
  backdrop-filter: blur(12px);
}

.header-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  color: #fff;
  text-decoration: none;
}

.brand img {
  width: auto;
  height: 60px;
}

.brand span { display: grid; line-height: 1.15; }
.brand strong { letter-spacing: 0.11em; font-size: 1rem; }
.brand small { color: #aebbc4; margin-top: 5px; font-size: 0.74rem; }

.main-menu {
  display: flex;
  align-items: center;
  gap: 25px;
}

.main-menu a {
  color: #d9e2e8;
  text-decoration: none;
  font-size: 0.94rem;
}

.main-menu a:hover,
.main-menu a:focus { color: #fff; }

.menu-toggle {
  display: none;
  padding: 8px 13px;
  color: #fff;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.28);
  border-radius: 7px;
}

.hero {
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(circle at 74% 42%, rgba(83,184,223,0.18), transparent 31%),
    radial-gradient(circle at 88% 17%, rgba(215,155,53,0.16), transparent 24%),
    linear-gradient(122deg, var(--navy) 0%, #101f2e 52%, #142f46 100%);
}

.hero-grid {
  min-height: 650px;
  display: grid;
  grid-template-columns: 1.16fr 0.84fr;
  gap: 55px;
  align-items: center;
  padding-top: 70px;
  padding-bottom: 70px;
}

.eyebrow,
.section-label {
  margin: 0 0 13px;
  color: var(--gold);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(3.6rem, 8vw, 7rem);
  line-height: 0.92;
  letter-spacing: -0.055em;
}

.hero-text {
  max-width: 720px;
  margin: 28px 0 0;
  color: #d8e3e9;
  font-size: clamp(1.05rem, 2vw, 1.34rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  min-height: 47px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 21px;
  border: 1px solid transparent;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
}

.button.primary {
  background: linear-gradient(180deg, #e4aa49, #c17c22);
  color: #16120c;
  box-shadow: 0 10px 28px rgba(215,155,53,0.18);
}

.button.secondary {
  color: #fff;
  background: rgba(255,255,255,0.045);
  border-color: rgba(255,255,255,0.27);
}

.development-note {
  margin: 18px 0 0;
  color: #aebbc4;
  font-size: 0.9rem;
}

.hero-visual {
  position: relative;
  min-height: 510px;
  display: grid;
  place-items: center;
}

.hero-visual img {
  position: relative;
  z-index: 2;
  max-height: 510px;
  width: auto;
  filter: drop-shadow(0 25px 42px rgba(0,0,0,0.35));
}

.logo-halo {
  position: absolute;
  width: 430px;
  height: 430px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(83,184,223,0.22), rgba(83,184,223,0.02) 60%, transparent 70%);
  border: 1px solid rgba(255,255,255,0.07);
}

.quick-info {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.quick-grid div {
  padding: 24px 25px;
  border-right: 1px solid var(--line);
}

.quick-grid div:last-child { border-right: 0; }
.quick-grid strong { display: block; font-size: 0.98rem; }
.quick-grid span { color: var(--muted); font-size: 0.86rem; }

.section { padding: 90px 0; }

.section h2 {
  margin: 0;
  max-width: 850px;
  font-size: clamp(2.15rem, 4.4vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.section-intro {
  max-width: 850px;
  margin: 23px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 42px;
}

.card {
  min-height: 245px;
  padding: 25px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 13px;
  box-shadow: 0 14px 36px rgba(20,36,49,0.04);
}

.card-number {
  display: block;
  color: var(--gold-dark);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.card h3 { margin: 34px 0 10px; font-size: 1.18rem; }
.card p { margin: 0; color: var(--muted); }

.section-dark {
  color: #fff;
  background: linear-gradient(125deg, var(--navy), var(--navy-2));
}

.compatibility-grid {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.section-intro.light { color: #bac8d1; }

.compatibility-panel {
  padding: 30px;
  background: rgba(255,255,255,0.055);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 14px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-list span {
  padding: 8px 12px;
  color: #fff;
  background: rgba(83,184,223,0.11);
  border: 1px solid rgba(83,184,223,0.27);
  border-radius: 999px;
  font-size: 0.86rem;
}

.compatibility-panel p {
  margin: 24px 0 0;
  color: #bdcad2;
}

.status-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 38px;
  margin-top: 42px;
  padding: 30px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
}

.status-box h3,
.download-box h3 { margin: 0 0 10px; }

.status-box p,
.download-box p { margin: 0; color: var(--muted); }

.status-box dl { margin: 0; }

.status-box dl div {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.status-box dl div:last-child { border-bottom: 0; }
.status-box dt { color: var(--muted); }
.status-box dd { margin: 0; font-weight: 700; text-align: right; }

.download-box {
  margin-top: 18px;
  padding: 25px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 14px;
}

.button.disabled {
  color: #68757e;
  background: #ced7dc;
  cursor: not-allowed;
}

.contact-section { background: #fff; }

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 0.75fr;
  gap: 55px;
  align-items: end;
}

.contact-inner p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.site-footer {
  color: #dce4e9;
  background: var(--navy);
  padding: 34px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 28px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 13px;
}

.footer-brand img { width: auto; height: 54px; }
.footer-brand div { display: grid; line-height: 1.2; }
.footer-brand span { color: #94a4ae; font-size: 0.78rem; }
.footer-inner > p { margin: 0; color: #94a4ae; font-size: 0.86rem; }

@media (max-width: 900px) {
  .menu-toggle { display: inline-flex; }

  .main-menu {
    position: absolute;
    top: 78px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--navy);
    border-top: 1px solid rgba(255,255,255,0.1);
  }

  .main-menu.open { display: flex; }

  .main-menu a {
    padding: 14px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }

  .hero-grid,
  .compatibility-grid,
  .status-box,
  .contact-inner {
    grid-template-columns: 1fr;
  }

  .hero-grid { min-height: auto; }
  .hero-visual { min-height: 420px; }
  .hero-visual img { max-height: 400px; }

  .quick-grid { grid-template-columns: repeat(2, 1fr); }
  .quick-grid div:nth-child(2) { border-right: 0; }
  .quick-grid div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }

  .cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 620px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .brand img { height: 49px; }
  .brand small { display: none; }
  .header-inner { min-height: 68px; }
  .main-menu { top: 68px; }

  .hero-grid { padding-top: 58px; padding-bottom: 58px; }
  .hero-visual { min-height: 330px; }
  .hero-visual img { max-height: 320px; }
  .logo-halo { width: 300px; height: 300px; }

  .quick-grid,
  .cards { grid-template-columns: 1fr; }

  .quick-grid div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .section { padding: 68px 0; }

  .status-box dl div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .status-box dd { text-align: left; }

  .download-box,
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}